Tools for adjusting bolts/screws, choosing different heads

Abstract:

Screws and bolts are used to attach two pieces of material together. Screws and bolts are very similar. Many people use the words “Screw” and “bolt” interchangeably. There are many types of screws and bolts. Most screws and bolts are steel, stainless steel or zinc-plated steel. There are also special screws created from other materials like nylon. Various head shapes, thread types, and driving methods exist for screws and bolts